The free$-$electron density in a copper wire is $8\mathrm{.}5{10}^{28}$ electrons $\frac{?}{m^3}.$ An electric field makes an electron travel a distance of $7\mathrm{.}70$ cm through the copper wire in $110$ minutes. What is the electric field strength in this wire wire? and the resistivity of copper $=1\mathrm{.}72{10}^{-8}*m)$

$2\mathrm{.}5{10}^{-3}\frac{N}{C}$

$2\mathrm{.}7{10}^{-3}\frac{N}{C}$

$5\mathrm{.}0{10}^{-3}\frac{N}{C}$

$6\mathrm{.}0{10}^{-3}\frac{N}{C}$

$3\mathrm{.}9{10}^{-3}\frac{N}{C}$